Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2011

Summary Of Fair Value Of Financial Assets And Liabilities Measured At Recurring Basis And Valuation Techniques


	September 30, 2011
	Total		Level 1		Level 2		Level 3		Valuation Techniques
Assets:
Money market funds	$	124,452	$	124,452	$	—	$	—		(a	)
U.S. treasury securities		3,429		—		3,429		—		(a	)
U.S. agency securities		8,074		6,060		2,014		—		(a	)
Corporate notes/bonds		49,270		—		49,270		—		(a	)
Certificates/term deposits		3,286		—		3,286		—		(a	)
Derivative assets ⁽¹⁾		2,795		—		2,795		—		(a	)

Total	$	191,306	$	130,512	$	60,794	$	—

Liabilities:
Derivative liabilities ⁽¹⁾	$	372	$	—	$	372	$	—		(a	)
Contingent consideration		11,655		—		—		11,655		(b	)

Total	$	12,027	$	—	$	372	$	11,655


	December 31, 2010
	Total		Level 1		Level 2		Level 3		Valuation Techniques
Assets:
Money market funds	$	268,118	$	268,118	$	—	$	—		(a	)
U.S. treasury securities		24,511		24,511		—		—		(a	)
U.S. agency securities		35,387		35,387		—		—		(a	)
Corporate notes/bonds		51,181		—		51,181		—		(a	)
Certificates/term deposits		10,777		—		10,777		—		(a	)
Commercial paper		14,984		—		14,984		—		(a	)
Derivative assets ⁽¹⁾		1,123		—		1,123		—		(a	)

Total	$	406,081	$	328,016	$	78,065	$	—

Liabilities:
Derivative liabilities ⁽¹⁾	$	1,380	$	—	$	1,380	$	—		(a	)
Contingent consideration		8,515		—		—		8,515		(b	)

Total	$	9,895	$	—	$	1,380	$	8,515

(1)	See Note 15 – Derivative Instruments for details.

Summary Of Liabilities Measured At Fair Value On Recurring Basis Using Significant Unobservable Inputs (Level 3)


	Nine Months Ended September 30 ⁽¹⁾
	2011			2010
Total, beginning of the period	$	8,515		$	4,000
Contingent consideration		5,848			2,015
Payment of contingent consideration		(2,708	)		—

Total, end of the period	$	11,655		$	6,015

(1)

We enter into earn-out agreements with the shareholders of certain companies we acquire. The earn-out contingent payments are typically based on the acquired company's products' total revenue or sales growth over a specified period after the acquisition date. This also includes contingent consideration relating to our purchase of intellectual property. During the second quarter of 2011, we separately purchased intellectual property and entered into an agreement whereby the former owner has the opportunity to earn an additional amount contingent upon achievement of certain technology milestones.

Summary Of Book Value And Fair Value Of Current And Long-Term Portion Of Loans Payable


	Book Value		Fair Value ⁽¹⁾
Current portion of loans payable	$	587	$	587
Long-term portion of loans payable		32,310		32,310

	$	32,897	$	32,897

(1)	Estimated fair value of long-term debt is based on quoted prices for similar liabilities for which significant inputs are observable.

- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

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- Definition

Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.

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